Linux and G5 (once again)

Before analyzing several fields of Linux support to G5 boxes, I want to warn you that what you read here is not (yet?) applicable to iMac G5. Most of the hardware could be the same, but this model is shipping in these days and it is just too soon even to get successful/unsuccesful reports.
Usually support situation changes very fastly, so consider doing many searches on the net about this argument to to get always the latest informations.